Gravitational multipole moments of the Sun are still poorly known. Theoretically, the difficulty is mainly due to the differential rotation for which the velocity rate varies both on the surface and with the depth. From an observational point of view, the multipole moments cannot be directly measured. However, recent progresses have been made proving the existence of a strong radial differential rotation in a thin layer near the solar surface (the leptocline). Applying the theory of rotating stars, we will first compute values of J2 and J4 taking into account the radial gradient of rotation, then we will compare these values with the existing ones, giving a more complete review. We will explain some astrophysical outcomes, mainly on the relativistic Post Newtonian parameters. Finally we will conclude by indicating how space experiments (balloon SDS flights, Golf NG, Beppi-Colombo, Gaia...) will be essential to unambiguously determine these parameters.
A. Ajabshirizadeh, and Z. Fazel, (2019). Solar rotation gravitational moments. Iranian Journal of Physics Research, 5(3), 161-161.
MLA
A. Ajabshirizadeh, , and Z. Fazel, . "Solar rotation gravitational moments", Iranian Journal of Physics Research, 5, 3, 2019, 161-161.
HARVARD
A. Ajabshirizadeh , Z. Fazel (2019). 'Solar rotation gravitational moments', Iranian Journal of Physics Research, 5(3), pp. 161-161.
CHICAGO
A. Ajabshirizadeh and Z. Fazel, "Solar rotation gravitational moments," Iranian Journal of Physics Research, 5 3 (2019): 161-161,
VANCOUVER
A. Ajabshirizadeh , Z. Fazel Solar rotation gravitational moments. Dear user; Recently we have changed our software to Sinaweb. If you had already registered with the old site, you may use the same USERNAME but you need to change your password. To do so at the first use, please choose, 2019; 5(3): 161-161.
